- Correspondence to Dr Anna Karin Ahlsén, Department of Obstetrics and Gynaecology, Södertälje Sjukhus AB, Södertälje 152 86, Sweden;
- Received December 20, 2013
- Revised September 12, 2014
- Accepted November 12, 2014
- First published December 16, 2014.
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